I used a single kit for the fixture in the video. I was able to mount the small sensor for the remote at the bottom and concealed the electronics in the box. Bought an extra double kit to back light my audio-video equipment at a future date. This is a great value compared to lesser kits on the market. Assembly is intuitive and simple. I did not use the adhesive backing, but advise care in preparing any surface before doing so. Also includes hangers. Excellent and recommended.
Update: There are several programming functions on the remote that I couldn't figure out, so I replied to Minger's follow-up email. Within hours Sumi responded with an attachment of simple instructions. Nice.